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论文类型：期刊论文

发表时间：2012-08-01

发表刊物：SCRIPTA MATERIALIA

收录刊物：SCIE、EI、Scopus

卷号：67

期号：4

页面范围：392-395

ISSN号：1359-6462

关键字：Nanocrystalline layer; Nanotwin; Hardness; Friction coefficient; CdZnTe

摘要：Nanocrystalline layers containing nanotwins induced under nanogrinding of soft-brittle cadmium zinc telluride single crystals exhibit higher hardness, ductility and fracture resistance, as well as a lower friction coefficient. This is different from the damaged layer of hard-brittle silicon semiconductors and usually nanocrystalline metals. The formation mechanism of nanotwins is interpreted by the undeformed chip thickness induced grinding energy. Compressive stress is formed in the nanocrsytalline layer containing nanotwins, whereas tensile stress is generated in that without nanotwins. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.